U.S. Food and Drug Administration (FDA) Accepts for Priority Review Bristol Myers Squibb’s Supplemental Biologics License Application for Breyanzi (lisocabtagene maraleucel) as a Second-Line Therapy for Relapsed or Refractory Large B-cell Lymphoma

On February 17, 2022 Bristol Myers Squibb (NYSE: BMY) reported that the U.S. Food and Drug Administration (FDA) has accepted its supplemental Biologics License Application (sBLA) for Breyanzi (lisocabtagene maraleucel), a CD19-directed chimeric antigen receptor (CAR) T cell therapy, to expand its current indication to include earlier use of Breyanzi for the treatment of adults with relapsed or refractory large B-cell lymphoma (LBCL) after failure of first-line therapy (Press release, Bristol-Myers Squibb, FEB 17, 2022, View Source [SID1234608222]). The FDA has granted the application Priority Review and assigned a Prescription Drug User Fee Act (PDUFA) goal date of June 24, 2022.

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"Breyanzi as a differentiated CD19-directed CAR T cell therapyhas already proven to be an important treatment option for patients with relapsed or refractory large B-cell lymphoma after two or more lines of systemic therapy and nowhas the potential to be a new standard of care for patients after failure of first-line therapy, offering significantly improved outcomes beyond the current mainstay of care," said Anne Kerber, senior vice president, Cell Therapy Development, Bristol Myers Squibb. "This acceptance from the FDA brings us one step closer to delivering a practice-changing treatment for primary refractory or relapsed large B-cell lymphoma, making Breyanzi available to more patients in need, and underscores the advancements we’re making in cell therapy research to transform the lives of patients with difficult-to-treat blood cancers, including lymphoma."

The sBLA is based on results from the Phase 3 TRANSFORM trial, a global, randomized, multicenter study evaluating Breyanzi as a second-line treatment in adults with relapsed or refractory LBCL compared to the standard of care consisting of salvage chemotherapy followed by high-dose chemotherapy plus autologous hematopoietic stem cell transplant. Results showed Breyanzi provided highly statistically significant and clinically meaningful improvements in event-free survival, complete responses and progression-free survival, and a positive trend in overall survival in patients with LBCL whose disease was primary refractory or relapsed within 12 months after first-line therapy compared to standard of care. Results were presented at the American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting and Exposition in December 2021.

About TRANSFORM

TRANSFORM (NCT03575351) is a pivotal, global, randomized, multicenter Phase 3 trial evaluating Breyanzi compared to current standard of care regimens in adults with large B-cell lymphoma that is primary refractory or relapsed within 12 months after first-line therapy and who are intended for stem cell transplant. Patients were randomized to receive Breyanzi or standard of care salvage chemotherapy, including rituximab plus dexamethasone, high-dose cytarabine, and cisplatin (R-DHAP), rituximab plus ifosfamide, carboplatin and etoposide (R-ICE), or rituximab plus gemcitabine, dexamethasone and cisplatin (R-GDP) per the investigators’ choice before proceeding to high-dose chemotherapy (HDCT) and hematopoietic stem cell transplant (HSCT). The primary endpoint of the study is event-free survival, defined as time from randomization to death from any cause, progressive disease, failure to achieve complete response or partial response, or start of new antineoplastic therapy due to efficacy concerns, whichever occurs first. Key secondary endpoints include complete response rate, progression-free survival, and overall survival. Overall response rate and duration of response are additional secondary endpoints.

About Breyanzi

Breyanzi is a CD-19 directed chimeric antigen receptor (CAR) T cell therapy with a defined and purified composition and 4-1BB costimulatory domain. Breyanzi is administered as a defined composition to reduce variability of the CD8 and CD4 component dose. The 4-1BB signaling domain enhances the expansion and persistence of the CAR T cells. Breyanzi is approved by the U.S. Food and Drug Administration for the treatment of adult patients with relapsed or refractory LBCL after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified (including DLBCL arising from indolent lymphoma), high-grade B-cell lymphoma, primary mediastinal large B-cell lymphoma, and follicular lymphoma grade 3B. Breyanzi is not indicated for the treatment of patients with primary central nervous system lymphoma. The U.S. Prescribing Information for Breyanzi has a BOXED WARNING for the risks of cytokine release syndrome (CRS) and neurologic toxicities (NT). Breyanzi is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the BREYANZI REMS.

Breyanzi is also approved in Japan for relapsed and refractory LBCL after two or more lines of systemic therapy, and Marketing Authorization Applications for Breyanzi for this indicationare currently under review in the European Union, Switzerland and Canada. Bristol Myers Squibb’s clinical development program for Breyanzi includes clinical studies in earlier lines of treatment for patients with relapsed or refractory LBCL and other types of lymphoma. For more information, visit clinicaltrials.gov.

Important Safety Information

BOXED WARNING: CYTOKINE RELEASE SYNDROME and NEUROLOGIC TOXICITIES

Cytokine Release Syndrome (CRS), including fatal or life-threatening reactions, occurred in patients receiving BREYANZI. Do not administer BREYANZI to patients with active infection or inflammatory disorders. Treat severe or life-threatening CRS with tocilizumab with or without corticosteroids.
Neurologic toxicities, including fatal or life-threatening reactions, occurred in patients receiving BREYANZI, including concurrently with CRS, after CRS resolution or in the absence of CRS. Monitor for neurologic events after treatment with BREYANZI. Provide supportive care and/or corticosteroids as needed.
BREYANZI is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the BREYANZI REMS.
Cytokine Release Syndrome (CRS)

CRS, including fatal or life-threatening reactions, occurred following treatment with BREYANZI. CRS occurred in 46% (122/268) of patients receiving BREYANZI, including ≥ Grade 3 (Lee grading system) CRS in 4% (11/268) of patients. One patient had fatal CRS and 2 had ongoing CRS at time of death. The median time to onset was 5 days (range: 1 to 15 days). CRS resolved in 119 of 122 patients (98%) with a median duration of 5 days (range: 1 to 17 days). Median duration of CRS was 5 days (range 1 to 30 days) in all patients, including those who died or had CRS ongoing at time of death.

Among patients with CRS, the most common manifestations of CRS include fever (93%), hypotension (49%), tachycardia (39%), chills (28%), and hypoxia (21%). Serious events that may be associated with CRS include cardiac arrhythmias (including atrial fibrillation and ventricular tachycardia), cardiac arrest, cardiac failure, diffuse alveolar damage, renal insufficiency, capillary leak syndrome, hypotension, hypoxia, and hemophagocytic lymphohistiocytosis/macrophage activation syndrome (HLH/MAS).

Ensure that 2 doses of tocilizumab are available prior to infusion of BREYANZI. Sixty-one of 268 (23%) patients received tocilizumab and/or a corticosteroid for CRS after infusion of BREYANZI. Twenty-seven (10%) patients received tocilizumab only, 25 (9%) received tocilizumab and a corticosteroid, and 9 (3%) received corticosteroids only.

Neurologic Toxicities

Neurologic toxicities that were fatal or life-threatening, occurred following treatment with BREYANZI. CAR T cell-associated neurologic toxicities occurred in 35% (95/268) of patients receiving BREYANZI, including ≥ Grade 3 in 12% (31/268) of patients. Three patients had fatal neurologic toxicity and 7 had ongoing neurologic toxicity at time of death. The median time to onset of the first event was 8 days (range: 1 to 46 days). The onset of all neurologic events occurred within the first 8 weeks following BREYANZI infusion. Neurologic toxicities resolved in 81 of 95 patients (85%) with a median duration of 12 days (range: 1 to 87 days). Three of four patients with ongoing neurologic toxicity at data cutoff had tremor and one subject had encephalopathy. Median duration of neurologic toxicity was 15 days (range: 1 to 785 days) in all patients, including those with ongoing neurologic events at the time of death or at data cutoff.

Seventy-eight (78) of 95 (82%) patients with neurologic toxicity experienced CRS. Neurologic toxicity overlapped with CRS in 57 patients. The onset of neurologic toxicity was after onset of CRS in 30 patients, before CRS onset in 13 patients, same day as CRS onset in 7 patients, and same day as CRS resolution in 7 patients.

Neurologic toxicity resolved in three patients before the onset of CRS. Eighteen patients experienced neurologic toxicity after resolution of CRS.

The most common neurologic toxicities included encephalopathy (24%), tremor (14%), aphasia (9%), delirium (7%), headache (7%), dizziness (6%), and ataxia (6%). Serious events including cerebral edema and seizures occurred with BREYANZI. Fatal and serious cases of leukoencephalopathy, some attributable to fludarabine, have occurred in patients treated with BREYANZI.

CRS and Neurologic Toxicities Monitoring

Monitor patients daily at a certified healthcare facility during the first week following infusion, for signs and symptoms of CRS and neurologic toxicities. Monitor patients for signs and symptoms of CRS and neurologic toxicities for at least 4 weeks after infusion; evaluate and treat promptly. Counsel patients to seek immediate medical attention should signs or symptoms of CRS or neurologic toxicity occur at any time. At the first sign of CRS, institute treatment with supportive care, tocilizumab or tocilizumab and corticosteroids as indicated.

BREYANZI REMS

Because of the risk of CRS and neurologic toxicities, BREYANZI is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the BREYANZI REMS. The required components of the BREYANZI REMS are:

Healthcare facilities that dispense and administer BREYANZI must be enrolled and comply with the REMS requirements.
Certified healthcare facilities must have on-site, immediate access to tocilizumab.
Ensure that a minimum of 2 doses of tocilizumab are available for each patient for infusion within 2 hours after BREYANZI infusion, if needed for treatment of CRS.
Certified healthcare facilities must ensure that healthcare providers who prescribe, dispense, or administer BREYANZI are trained on the management of CRS and neurologic toxicities.
Further information is available at www.BreyanziREMS.com, or contact Bristol Myers Squibb at 1-888-423-5436.

Hypersensitivity Reactions

Allergic reactions may occur with the infusion of BREYANZI. Serious hypersensitivity reactions, including anaphylaxis, may be due to dimethyl sulfoxide (DMSO).

Serious Infections

Severe infections, including life-threatening or fatal infections, have occurred in patients after BREYANZI infusion. Infections (all grades) occurred in 45% (121/268) of patients. Grade 3 or higher infections occurred in 19% of patients. Grade 3 or higher infections with an unspecified pathogen occurred in 16% of patients, bacterial infections occurred in 5%, and viral and fungal infections occurred in 1.5% and 0.4% of patients, respectively. Monitor patients for signs and symptoms of infection before and after BREYANZI administration and treat appropriately. Administer prophylactic antimicrobials according to standard institutional guidelines.

Febrile neutropenia has been observed in 9% (24/268) of patients after BREYANZI infusion and may be concurrent with CRS. In the event of febrile neutropenia, evaluate for infection and manage with broad spectrum antibiotics, fluids, and other supportive care as medically indicated.

Avoid administration of BREYANZI in patients with clinically significant active systemic infections.

Viral reactivation: Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients treated with drugs directed against B cells. Ten of the 11 patients in the TRANSCEND study with a prior history of HBV were treated with concurrent antiviral suppressive therapy to prevent HBV reactivation during and after treatment with BREYANZI. Perform screening for HBV, HCV, and HIV in accordance with clinical guidelines before collection of cells for manufacturing.

Prolonged Cytopenias

Patients may exhibit cytopenias not resolved for several weeks following lymphodepleting chemotherapy and BREYANZI infusion. Grade 3 or higher cytopenias persisted at Day 29 following BREYANZI infusion in 31% (84/268) of patients, and included thrombocytopenia (26%), neutropenia (14%), and anemia (3%). Monitor complete blood counts prior to and after BREYANZI administration.

Hypogammaglobulinemia

B-cell aplasia and hypogammaglobulinemia can occur in patients receiving treatment with BREYANZI. The adverse event of hypogammaglobulinemia was reported as an adverse reaction in 14% (37/268) of patients; laboratory IgG levels fell below 500 mg/dL after infusion in 21% (56/268) of patients. Hypogammaglobulinemia, either as an adverse reaction or laboratory IgG level below 500 mg/dL after infusion, was reported in 32% (85/268) of patients. Monitor immunoglobulin levels after treatment with BREYANZI and manage using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement as clinically indicated.

Live vaccines: The safety of immunization with live viral vaccines during or following BREYANZI treatment has not been studied. Vaccination with live virus vaccines is not recommended for at least 6 weeks prior to the start of lymphodepleting chemotherapy, during BREYANZI treatment, and until immune recovery following treatment with BREYANZI.

Secondary Malignancies

Patients treated with BREYANZI may develop secondary malignancies. Monitor lifelong for secondary malignancies. In the event that a secondary malignancy occurs, contact Bristol Myers Squibb at 1-888-805-4555 for reporting and to obtain instructions on collection of patient samples for testing.

Effects on Ability to Drive and Use Machines

Due to the potential for neurologic events, including altered mental status or seizures, patients receiving BREYANZI are at risk for altered or decreased consciousness or impaired coordination in the 8 weeks following BREYANZI administration. Advise patients to refrain from driving and engaging in hazardous occupations or activities, such as operating heavy or potentially dangerous machinery, during this initial period.

Adverse Reactions

Serious adverse reactions occurred in 46% of patients. The most common nonlaboratory, serious adverse reactions (> 2%) were CRS, encephalopathy, sepsis, febrile neutropenia, aphasia, pneumonia, fever, hypotension, dizziness, and delirium. Fatal adverse reactions occurred in 4% of patients.

The most common nonlaboratory adverse reactions of any grade (≥ 20%) were fatigue, CRS, musculoskeletal pain, nausea, headache, encephalopathy, infections (pathogen unspecified), decreased appetite, diarrhea, hypotension, tachycardia, dizziness, cough, constipation, abdominal pain, vomiting, and edema.

Please see full Prescribing Information, including Boxed WARNINGS and Medication Guide.

Bristol Myers Squibb: Creating a Better Future for People with Cancer

Bristol Myers Squibb is inspired by a single vision—transforming patients’ lives through science. The goal of the company’s cancer research is to deliver medicines that offer each patient a better, healthier life and to make cure a possibility. Building on a legacy across a broad range of cancers that have changed survival expectations for many, Bristol Myers Squibb researchers are exploring new frontiers in personalized medicine, and through innovative digital platforms, are turning data into insights that sharpen their focus. Deep scientific expertise, cutting-edge capabilities and discovery platforms enable the company to look at cancer from every angle. Cancer can have a relentless grasp on many parts of a patient’s life, and Bristol Myers Squibb is committed to taking actions to address all aspects of care, from diagnosis to survivorship. Because as a leader in cancer care, Bristol Myers Squibb is working to empower all people with cancer to have a better future.

Learn more about the science behind cell therapy and ongoing research at Bristol Myers Squibb here.

Atara Biotherapeutics to Announce Fourth Quarter and Full Year 2021 Financial Results on Monday, February 28, 2022

On February 17, 2022 Atara Biotherapeutics, Inc. (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, reported the Company will release fourth quarter and full year 2021 financial results after market close on Monday, February 28, 2022 (Press release, Atara Biotherapeutics, FEB 17, 2022, View Source [SID1234608221]). Following the release, the Company will host a live conference call and webcast at 4:30 p.m. EST to discuss the Company’s financial results and provide a corporate update.

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Analysts and investors can participate in the conference call by dialing 877-407-8291 for domestic callers and 201-689-8345 for international callers, using the conference ID 13725930. A live audio webcast can be accessed by visiting the Investors & Media – News & Events section of atarabio.com. An archived replay will be available on the Company’s website for 30 days following the live webcast.

Arvinas PROTAC® Protein Degrader Bavdegalutamide (ARV-110) Continues to Demonstrate Clinical Benefit in Men with Metastatic Castration-Resistant Prostate Cancer

On February 17, 2022 Arvinas, Inc. (Nasdaq: ARVN), a clinical-stage biotechnology company creating a new class of drugs based on targeted protein degradation, reported completed Phase 1 and interim Phase 2 ARDENT data for bavdegalutamide (ARV-110), a novel PROTAC degrader targeting the androgen receptor (AR) (Press release, Arvinas, FEB 17, 2022, View Source [SID1234608220]). These data continue to provide evidence of anti-tumor activity and clinical benefit in patients with metastatic castration-resistant prostate cancer (mCRPC). Bavdegalutamide reduced prostate-specific antigen (PSA) levels greater than or equal to 50% (PSA50) in 46% of patients with tumors harboring AR T878X and/ or H875Y (T878X = T878A or T878S) mutations, and two of the seven Response Evaluation Criteria in Solid Tumors (RECIST)-evaluable patients in this group also had confirmed tumor responses. These results also demonstrated PSA declines and tumor regressions in patients without tumors harboring AR T878X/H875Y mutations, suggesting an opportunity to develop bavdegalutamide more broadly in prostate cancer. Data from these trials will be presented in both a rapid abstract session and a poster session on February 17, 2022, at the 2022 American Society of Clinical Oncology (ASCO) (Free ASCO Whitepaper) Genitourinary (ASCO GU) Cancers Symposium.

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"These results reinforce our belief that bavdegalutamide has the potential to provide meaningful clinical benefits to a patient population for which few options exist after progression of their mCRPC," said John Houston, Ph.D., president and chief executive officer of Arvinas. "In addition to a PSA50 response rate of 46% in tumors harboring T875X and/or H878Y mutations, we also saw durable confirmed responses in 2 of the 7 evaluable patients in this group. Overall, these data give us confidence that there is a clear path forward to accelerating the potential development of this novel treatment as a precision medicine option for patients."

Highlights from the Phase 1 and interim Phase 2 ARDENT data (data cut-off date, December 20, 2021):

PSA50 rate of 46% in patients with AR T878X/H875Y tumor mutations (n=28)
Two durable confirmed RECIST (Response Evaluation Criteria in Solid Tumors) partial responses out of seven RECIST-evaluable patients with AR T878X/H875Y tumor mutations
PSA reductions and evidence of anti-tumor activity as measured by RECIST were observed across all subgroups regardless of mutation status, including in patients with tumors not harboring AR T878X/875Y mutations
PSA50 rate of 22% (six of 27) in evaluable patients in the subgroup defined as "less pretreated" (having received only one prior novel hormonal agent and no prior chemotherapy). A majority of patients with PSA50 declines in this group had tumors with the AR T878X/H875Y mutations.
Bavdegalutamide had a manageable tolerability profile at the recommended Phase 2 dose (RP2D) of 420 mg oral, once daily. Most treatment-related adverse events (TRAEs) were Grade 1/2 and there were no Grade ≥4 TRAEs in the 138 patients treated at the RP2D
Arvinas intends to initiate discussions with the U.S. Food and Drug Administration (FDA) about the potential for an accelerated approval pathway with bavdegalutamide in a molecularly defined mCRPC population. The Company also plans to initiate a pivotal trial by year end. Future studies will be planned to explore the potential to treat earlier-line patients who may benefit from bavdegalutamide therapy.

Bavdegalutamide Clinical Update

Enrollment

As of the data cut-off date of December 20, 2021, 195 patients were enrolled across the Phase 1/2 clinical trial (71 in Phase 1; 124 in Phase 2).

The Phase 1 dose escalation trial evaluated bavdegalutamide at doses ranging from 35–700 mg, orally, once-daily (QD), or 210–420 mg twice-daily (BID) in patients with mCRPC and ≥2 prior therapies (including abiraterone and/or enzalutamide or other AR antagonist).

The ARDENT Phase 2 dose expansion trial was administered at a starting dose of 420 mg QD. Patients in the ARDENT trial received a median of four prior lines of therapy with 100% receiving at least one novel hormonal therapy (NHA; 64% abiraterone, 75% enzalutamide or other AR inhibitor, 39% both abiraterone and an AR inhibitor) and 31% receiving at least one chemotherapy regimen.

Patients in ARDENT were enrolled in one of four subgroups:

Tumors with AR T878X and/or H875Y mutations and excluding AR L702H mutations and AR-V7 splice variants
Tumors with wild-type AR or AR alterations other than T878X, H875Y, L702H, AR-V7
Tumors with AR L702H mutations or AR-V7 splice variants, which are variants of AR that bavdegalutamide does not degrade preclinically
Biomarker agnostic tumors with only one prior NHA and no prior chemotherapy
The biomarker-agnostic subgroup is referred to as "less pretreated;" the three biomarker-defined subgroups are referred to collectively as "more pretreated" and received 1-2 prior NHA and no more than two regimens of chemotherapy.

Efficacy Measures

Efficacy measures are presented on a combined basis for patients in both the completed Phase 1 dose escalation trial and the interim analysis from the ongoing ARDENT Phase 2 dose expansion trial.

Biomarker defined ("more pretreated"):
In patients with:

Tumors with AR T878X and/or H875Y mutations but excluding L702H and AR-V7 (n=8)
PSA50=75%; PSA30=75%
Tumors with wild-type AR or AR alterations other than T878X, H875Y, L702H, or AR-V7 (n=44)
PSA50=11%; PSA30=20%
Tumors with AR L702H or AR-V7 (n=25)
PSA50=4%; PSA30=20%
Biomarker agnostic ("less pretreated"):

No more than one prior NHA and no prior chemotherapy (n=27)
PSA50=22%; PSA30=26%
In biomarker-evaluable patients treated at or above the RP2D and with tumors harboring AR T878X/H875Y mutations (across all subgroups and thus regardless of prior therapy regimens or other mutations; n=28), the PSA50 response rate was 46% and the PSA decline of more than 30% (PSA30) response rate was 57%.

Of seven RECIST-evaluable patients across the Phase 1/Phase 2 trial having tumors harboring AR T878X/H875Y mutations, two had confirmed durable confirmed partial responses. These patients were on treatment for approximately nine months (ongoing as of the data cut-off) and 10 months; the duration of treatment ranged from eight weeks to 44 weeks, with three of the seven patients continuing on treatment as of the data cutoff of December 20, 2021.

Twelve (43%) of the 28 patients with AR T878X/H875Y-positive tumors received bavdegalutamide for ≥24 weeks, with nine patients ongoing as of the data cutoff.

One confirmed and three unconfirmed RECIST responses were seen in patients with tumors lacking AR T878X/H875Y mutations. The "less pretreated" subgroup (n=27) had a similar molecular profile – as assessed by circulating tumor DNA analysis – to the more pretreated, biomarker-defined subgroups in the ARDENT trial. These similarities included both AR variations (point mutations and AR-V7 splice variants) and non-AR mutations frequently associated with poor outcomes (e.g., TP53, BRCA1). Six of the 27 patients (22%) had PSA50 reductions, and this PSA50 rate was similar to that observed collectively in the "more pretreated" subgroups (16%; n=77). Four of the six "less pretreated" patients with PSA50 declines had tumors with AR T878X/H875Y mutations.

Safety

Bavdegalutamide had a manageable tolerability profile at the RP2D of 420 mg QD. The majority of treatment-related adverse events (TRAEs) were Grade 1/2 and there were no Grade ≥4 TRAEs in the 138 patients treated at the RP2D.

TRAEs that occurred in ≥10% of patients treated at the RP2D were nausea (Gr 1: 30%; Gr 2: 16%; Gr 3: 1%), fatigue (Gr 1: 23%; Gr 2: 12%; Gr 3: 1%), vomiting (Gr 1: 20%; Gr 2: 5%; Gr 3: 1%), decreased appetite (Gr 1: 14%; Gr 2: 11%; Gr 3: 1%), diarrhea (Gr 1: 14%; Gr 2: 4%; Gr 3: 2%), alopecia (Gr 1: 13%; Gr 2: 1%; Gr 3: N/A), AST increased (Gr 1: 9%; Gr 2: 3%; Gr 3: 1%), weight decreased (Gr 1: 7%; Gr 2: 5%; Gr 3: 0%), and anemia (Gr 1: 4%; Gr 2: 1%; Gr 3: 5%).

TRAEs at the RP2D led to dose reduction in 11 (8%) patients and discontinuation in 12 (9%) patients.

Anticipated 2022 Milestones for Bavdegalutamide

Discuss the potential accelerated approval path with the FDA (1H 2022)
Finalize partnership for companion diagnostic (1H 2022)
Initiate planned pivotal trial for patients with AR T878/H875 tumor mutations (2H 2022)
About Bavdegalutamide (ARV-110)
Bavdegalutamide is an investigational orally bioavailable PROTAC protein degrader designed to selectively target and degrade the androgen receptor (AR). Bavdegalutamide is being developed as a potential treatment for men with metastatic castration-resistant prostate cancer.

Bavdegalutamide has demonstrated activity in preclinical models of AR mutation or overexpression, both common mechanisms of resistance to currently available AR-targeted therapies.

Arbutus to Report Fourth Quarter and Year End 2021 Financial Results and Provide Corporate Update

On February 17, 2022 Arbutus Biopharma Corporation (Nasdaq: ABUS), a clinical-stage biopharmaceutical company leveraging its extensive virology expertise to develop novel therapeutics that target specific viral diseases, reported that it has scheduled its fourth quarter and year end 2021 financial results and corporate update for Thursday, March 3, 2022 (Press release, Arbutus Biopharma, FEB 17, 2022, View Source [SID1234608219]). The schedule for the press release and conference call/webcast are as follows:

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A live webcast of the conference call can be accessed through the Investors section of Arbutus’ website at www.arbutusbio.com.

An archived webcast will be available on the Arbutus website after the event. Alternatively, you may access a replay of the conference call by calling (855) 859-2056 or (404) 537-3406, and reference conference ID: 3977368.

APDN, EvviVax Announce Publication of Positive Preclinical Data for Linear DNA™ Platform Approach to Cancer Immunotherapy

On February 17, 2022 Applied DNA Sciences, Inc. (NASDAQ: APDN) (the "Company"), a leader in Polymerase Chain Reaction (PCR)-based DNA manufacturing and nucleic acid-based technologies, and its program development partner, EvviVax, S.R.L. ("Evvivax"), reported the publication of a manuscript detailing a preclinical study (the "study") showing that LinearDNA vaccines used for cancer immunotherapy produced a strong immune and specific antitumoral response in preclinical mouse models (Press release, Applied DNA Sciences, FEB 17, 2022, View Source [SID1234608218]). The study investigated the use of the LinearDNA platform to produce DNA vaccines targeting either tumor-associated antigens (TAA) and tumor-specific antigens (TSA or tumor neoantigens). The manuscript, "Linear DNA Amplicons as a Novel Cancer Vaccine Strategy," is published online on the bioRxiv.org preprint server and has been submitted for peer-reviewed publication. LinearDNA is Applied DNA’s proprietary, large-scale polymerase chain reaction ("PCR")-based manufacturing platform that allows for the large-scale production of specific DNA sequences.

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DNA vaccines that target TAAs hold promise as potential pan-cancer vaccines that, when used in conjunction with existing standards of care, can increase the efficacy of cancer immunotherapies. DNA vaccines targeting TSAs, otherwise known as personalized cancer vaccines, also hold great promise in immunotherapy as they can be customized to induce an immune response only against a patient’s tumor, thereby limiting on-target, off-tumor effects.

TAA: TERT Vaccine
One aspect of the study used a DNA vaccine targeting telomerase reverse transcriptase (TERT), a TAA that holds potential as a target for a pan-cancer vaccine. The TERT DNA vaccine was designed by EvviVax and exclusively licensed by the Company for the LinearDNA platform for veterinary applications. In prior clinical trials conducted by EvviVax, a plasmid form of the TERT DNA vaccine administered along with the standard of care chemotherapy was shown to increase the survival of canines with Stage III/IV B cell lymphoma from 37 weeks to 97 weeks. B-cell lymphoma is the most common type of non-Hodgkin lymphoma in canines, with lymphoma accounting for 15-20% of new cancer diagnoses in canines. For the study, the TERT DNA vaccine was administered to mice in either plasmid DNA or LinearDNA form and the immune response studied and compared. The study’s results demonstrated that both the plasmid DNA and LinearDNA forms of the TERT DNA vaccine induced comparable immune responses in mouse models.

TSA/Neoantigens Vaccine
The second aspect of the study utilized a personalized DNA vaccine specifically targeting several TSAs expressed in a colon cancer mouse model. Personalized cancer vaccines hold great promise in immunotherapy as they can be customized to induce an immune response only against a specific patient’s tumor, thereby limiting off-tumor effects and increasing efficacy and therapeutic index. In the study, LinearDNA and plasmid DNA forms of the personalized cancer vaccine were administered to mice in the colon cancer model. For both forms of the DNA vaccine, several cohorts also received immune checkpoint inhibitors (ICI) based on anti-CTLA-4 and/or anti-PD1. The study demonstrated that the LinearDNA personalized vaccine produces an equal or greater immune and antitumoral response than the plasmid form of the same DNA vaccine, particularly when coupled with ICI.

Dr. James A. Hayward, president and CEO of Applied DNA, stated, "The study demonstrates that LinearDNA and plasmid DNA can elicit a comparable immune response in animal cancer models. We believe this study validates the use of LinearDNA as a more cost- and time-efficient alternative to plasmid DNA for DNA-based cancer vaccines. Cancer immunotherapy is relevant to veterinary and human markets; the latter is expected to reach $169 billion by 2028. As the exclusive licensee of the TERT vaccine for veterinary applications, we believe these data support further investigation of the LinearDNA vaccine as a potential veterinary cancer immunotherapy and, beyond that, for human cancer immunotherapy."

Dr. Luigi Aurisicchio, CEO and chief scientific officer of Evvivax S.R.L., commented, "We believe that DNA vaccines for cancer hold immense promise for both human and veterinary applications. One obstacle to DNA vaccine manufacturing is their current production as plasmid DNA. We believe that the completely cell-free LinearDNA platform avoids the numerous pitfalls of plasmid DNA-based production, making it ideal for DNA vaccine manufacturing broadly, and in cancer immunotherapy, specifically."